As of 13:16 BST

Weather in Moel Tryfan

+12°

Moel Tryfan, Wednesday, 7 October, 13:16

Partly cloudy. Feels like 11°C. High 12°C, low 9°C.

Pressure1017 mb

Wind16 mph NW

Humidity74%

Visibility6.2 mi

Dew point7°C

Detailed hourly forecast

The month ahead in Moel Tryfan: daytime temperatures averaging +12° and +7.3° overnight — that is 1.4° below the climate average for October. Rain is expected on 11 days (around 76 mm), against a normal of 8 days and 50 mm. The warmest day should be 15 October (+15.8°), the coolest 20 October (+3.7°).

+12°/+7.3°

Average day / night

−1.4°

Below average

11 / 8

Wet days / normal

76 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+13.4°	+13.8°	-0.4°
17 October – 26 October	+9.8°	+12.7°	-2.9°
27 October – 5 November	near average	+11.8°	—

October records over 66 years

+21.7°10 October 2018All-time high

-1.4°30 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — Caernarfon (7.3 km away).

Thu, 08+8 ° /13 °

3.3

+13 °

Moel Tryfan, Thursday, 8 October

Rain. High 13°C, low 8°C.

Pressure1025 mb

Wind10 mph NW

Humidity71%

Visibility6.2 mi

Dew point6°C

Fri, 09+10 ° /13 °

15.9

+13 °

Moel Tryfan, Friday, 9 October

Rain. High 13°C, low 10°C.

Pressure1011 mb

Wind17 mph W

Humidity83%

Visibility6.2 mi

Dew point10°C

Sat, 10+9 ° /11 °

6.1

+11 °

Moel Tryfan, Saturday, 10 October

Light rain. High 11°C, low 9°C.

Pressure1012 mb

Wind21 mph W

Humidity71%

Visibility4.5 mi

Dew point5°C

Sun, 11+8 ° /11 °

0.9

+11 °

Moel Tryfan, Sunday, 11 October

Light rain. High 11°C, low 8°C.

Pressure1015 mb

Wind7 mph W

Humidity78%

Visibility6.2 mi

Dew point7°C

Mon, 12+9 ° /15 °

5.4

+15 °

Moel Tryfan, Monday, 12 October

Light rain. High 15°C, low 9°C.

Pressure1012 mb

Wind21 mph S

Humidity94%

Visibility—

Dew point12°C

Tue, 13+10 ° /15 °

4.9

+15 °

Moel Tryfan, Tuesday, 13 October

Light rain. High 15°C, low 10°C.

Pressure1020 mb

Wind17 mph S

Humidity95%

Visibility—

Dew point14°C

Wed, 14+7 ° /14 °

+14 °

Moel Tryfan, Wednesday, 14 October

Clear sky. High 14°C, low 7°C.

Pressure1030 mb

Wind5 mph NE

Humidity63%

Visibility—

Dew point6°C

Thu, 15+8 ° /16 °

+16 °

Moel Tryfan, Thursday, 15 October

Overcast. High 16°C, low 8°C.

Pressure1023 mb

Wind8 mph S

Humidity68%

Visibility—

Dew point9°C

Fri, 16+8 ° /15 °

+15 °

Moel Tryfan, Friday, 16 October

Overcast. High 15°C, low 8°C.

Pressure1011 mb

Wind9 mph S

Humidity55%

Visibility—

Dew point6°C

Sat, 17+6 ° /10 °

13.1

+10 °

Moel Tryfan, Saturday, 17 October

Rain. High 10°C, low 6°C.

Pressure1002 mb

Wind13 mph SW

Humidity97%

Visibility—

Dew point9°C

Sun, 18+7 ° /11 °

11.7

+11 °

Moel Tryfan, Sunday, 18 October

Rain. High 11°C, low 7°C.

Pressure1001 mb

Wind17 mph SE

Humidity75%

Visibility—

Dew point6°C

Mon, 19+5 ° /10 °

2.8

+10 °

Moel Tryfan, Monday, 19 October

Light rain. High 10°C, low 5°C.

Pressure1000 mb

Wind6 mph NW

Humidity73%

Visibility—

Dew point5°C

Tue, 20+4 ° /9 °

0.4

+9 °

Moel Tryfan, Tuesday, 20 October

Light rain. High 9°C, low 4°C.

Pressure1001 mb

Wind13 mph NW

Humidity69%

Visibility—

Dew point3°C

Wed, 21+5 ° /9 °

3.3

+9 °

Moel Tryfan, Wednesday, 21 October

Light rain. High 9°C, low 5°C.

Pressure1009 mb

Wind19 mph NW

Humidity71%

Visibility—

Dew point4°C

Thu, 22+4 ° /9 °

3.3

+9 °

Moel Tryfan, Thursday, 22 October

Light rain. High 9°C, low 4°C.

Pressure1014 mb

Wind7 mph NW

Humidity99%

Visibility—

Dew point8°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+9 ° /13 °

2.5

+13 °

Moel Tryfan, Friday, 23 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall2.5 mm

Chance of rain47%

Warmest on record+18° (1996)

Coldest on record+3° (1993)

Sat, 24+9 ° /13 °

3.8

+13 °

Moel Tryfan, Saturday, 24 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall3.8 mm

Chance of rain47%

Warmest on record+17° (1995)

Coldest on record+3° (2002)

Sun, 25+9 ° /12 °

4.1

+12 °

Moel Tryfan, Sunday, 25 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low9°C

Average rainfall4.1 mm

Chance of rain57%

Warmest on record+17° (2024)

Coldest on record+0° (2010)

Mon, 26+9 ° /12 °

3.1

+12 °

Moel Tryfan, Monday, 26 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low9°C

Average rainfall3.1 mm

Chance of rain48%

Warmest on record+17° (2005)

Coldest on record+2° (1997)

Tue, 27+9 ° /13 °

+13 °

Moel Tryfan, Tuesday, 27 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall4 mm

Chance of rain53%

Warmest on record+19° (2005)

Coldest on record+2° (1962)

Wed, 28+9 ° /12 °

3.9

+12 °

Moel Tryfan, Wednesday, 28 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low9°C

Average rainfall3.9 mm

Chance of rain63%

Warmest on record+17° (2022)

Coldest on record+3° (2008)

Thu, 29+8 ° /12 °

3.4

+12 °

Moel Tryfan, Thursday, 29 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall3.4 mm

Chance of rain52%

Warmest on record+18° (2022)

Coldest on record+0° (2018)

Fri, 30+8 ° /12 °

3.4

+12 °

Moel Tryfan, Friday, 30 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall3.4 mm

Chance of rain55%

Warmest on record+16° (2009)

Coldest on record-1° (2018)

Sat, 31+9 ° /12 °

3.9

+12 °

Moel Tryfan, Saturday, 31 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low9°C

Average rainfall3.9 mm

Chance of rain62%

Warmest on record+18° (2014)

Coldest on record0° (1988)

Sun, 01+8 ° /12 °

4.6

+12 °

Moel Tryfan, Sunday, 1 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall4.6 mm

Chance of rain58%

Warmest on record+15° (2015)

Coldest on record+1° (1988)

Mon, 02+8 ° /12 °

4.7

+12 °

Moel Tryfan, Monday, 2 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall4.7 mm

Chance of rain60%

Warmest on record+16° (2005)

Coldest on record+1° (1986)

Tue, 03+8 ° /11 °

4.3

+11 °

Moel Tryfan, Tuesday, 3 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low8°C

Average rainfall4.3 mm

Chance of rain62%

Warmest on record+15° (2011)

Coldest on record+0° (2006)

Wed, 04+7 ° /11 °

2.7

+11 °

Moel Tryfan, Wednesday, 4 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low7°C

Average rainfall2.7 mm

Chance of rain57%

Warmest on record+15° (2010)

Coldest on record0° (1968)

Thu, 05+7 ° /11 °

3.8

+11 °

Moel Tryfan, Thursday, 5 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low7°C

Average rainfall3.8 mm

Chance of rain58%

Warmest on record+17° (2025)

Coldest on record+2° (1965)

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Moel Tryfan are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Moel Tryfan since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.